Visual Acuity through Emergency Breathing Masks

Abstract

The feasibility of attaching monocular corrective lenses to the outside of the three faceplates of the three types of emergency breathing masks carried on submarines was investigate and found to be unacceptable. The configurations of the masks were so different that a refractive correction tailored to one mask was often unacceptable for use with another mask. Many subjects were disturbed by monocular corrections. Finally, the field of view was considerably reduced even with the large lenses used in this study. Binocular corrections are feasible but a binocular holder would further interfere with the visual field of those individuals who do not require a correction. Binocular corrections are also technically much more complex owing to the problem of aligning the optical centers of the lenses on the visual axes of the eyes. Three types of emergency breathing masks are carried on submarines, the Mark-V, the Emergency Air Breathing (EAB) mask, and the Oxygen Breathing Apparatus (OBA).

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Document Details

Document Type
Technical Report
Publication Date
Mar 10, 1986
Accession Number
ADA168200

Entities

People

  • James F. Socks
  • S. M. Luria

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Breathing
  • Binoculars
  • Biomedical Research
  • Breathing Apparatus
  • Breathing Masks
  • Classification
  • Emergencies
  • Eye Diseases
  • Eyeglasses
  • Gas Masks
  • Lenses
  • Line Of Sight
  • Masks
  • Protective Masks
  • Respiration
  • Security
  • Visual Acuity

Fields of Study

  • Physics

Readers

  • Human-Computer Interaction (HCI).
  • Systems Analysis and Design
  • Underwater engineering and Marine Technology.